Conveyer.



N. 813,474. PATENTED FEB. 2'7, 1906.

P. R. WILLSON, JR. GONVEYBR.

APPLICATION FILED MAY22. 1902.

2 SHEETS-SHEET l.

PATENTED PEB. 27, 1906. F. R. WILLSON, JR.

CONVEYER.

APPLICATION FILED MAYZZ. 1902.

2 SHEETS-SHEET 2.

mui

FREEMAN R. VVILLSON, JR., OF WORTHINGTON,

OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OF COLUMBUS, OHIO.

CONVEYER.

Specification of Letters Patent.

Patented Feb. 27', 1906.

Application filed May 22,1902. Serial No. 108,572.

To @ZL whom it Wha/y concern.-

Be it known that I, FREEMAN R. WILL- soN, Jr., a citizen of the United States, residing at Worthington, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Conveyers, of which the following is a specification, reference being had therein to the accompanying drawings.

Figure 1 is a side elevation of a short section of a conveyer provided with swinging buckets and a tripping device for the buckets embodying my present invention. Fig. 2 is a transverse sectional view of the conveyer taken on the line 2 2 of Fig. 1. Fig. 3 is a sectional view of the tripping device, taken on the line 3 3 of Fig. 1. Fig. 4 is a detail sectional view of one of the sections or parts of which the eccentric that moves the trippingcam is formed.

My improved tripping device is adapted for use in connection with conveyers having swinging buckets and is arranged -to cause the tilting or tipping of the buckets for the purpose of discharging them as they pass the dumping or tilting mechanism.

In the drawings, 2 indicates the swinging buckets, which are arranged between and carried by a pair of parallel chains 3. These chains may be of any usual or preferred construction, those represented in the drawings being provided with supporting rollers or wheels 4, which are adapted to travel upon suitable tracks or ways 5. The buckets are pivotally connected with the opposite chainlinks near their upper edges, so that they freely swing below and between the opposite lines of chain. They are provided upon their opposite sides and below their pivotal connection with the chains with contact-pieces which are preferably in the form of antifriction rollers or wheels 6. These contactpieces are adapted to come into engagement with the tripping or dumping device, and thus cause the buckets to be tilted into a position to discharge the loads which they may be carrying.

I prefer that there should be tripping devices upon both sides of the bucket adapted to be engaged simultaneously by the contactpieces upon opposite sides of the bucket, as such arrangement causes less strain and wear upon the parts of the apparatus than when the tripping devices are located at one side of the bucket only.

The tripping or dumping means are supported upon asuitablepart of the framework, (indicated in the drawings by 7 In suitable bearings 8 on such framework is mounted a cross-shaft 9, to which are secured a pair of dumping or tripping cams 10, with which the contact pieces 6 of the buckets engage. These tripping-cams are arranged so that they may be moved into and out of the path of the contact-pieces 6, to effect which I employ a pair of eccentrics 11, mounted upon a -cross-shaft 12, supported upon the framework 7. I prefer ythat the eccentrics 11 should be so connected with the trippingcam 10 as to move it positively in both directions-that is to say, into and out of operative position-for which purpose I arrange the eccentrics within a slot 13, formed in the cam. At one end of the eccentric-carrying shaft 12 there is a sheave or pulley 14, with which the operating chain or rope 15 engages.

In order to secure a constant engagement of the eccentrics with the cams under the severe strains and the trying conditions to which they are subjected in use, I prefer to construct them as follows: Each eccentric is provided with a pair of periphery flanges 16, between which is arranged the bearing or lifting face 17 of the eccentric that is arranged to engage with the edge 18 of the cam surrounding the slot 13, in which the eccentric is mounted. By constructing the eccentric with peripheral anges which are adapted to engage with the opposite sides or faces of the cam at widely-separated points I provide means which tend to keep the dumping device in proper alinement with the conveyer. Each eccentric is also preferably formed of two parts which are duplicates of each other and are connected together by bolts 19, which pass through suitable apertures in the web portions 2() of the eccentricsections. (See Fig. 4.)

The front face 21 of the cam 10-that is, the face with which the contact first comes into engagement-s comparatively abrupt, so as to cause a rapid swinging of the bucket, while the other or rear face 22 of the cam is much more gradual. The reason for this is to allow the buckets to come back to normal position gradually in order to llessen the ICO tendency for the they have been dumped.

It will be seen, particularly by reference to Fig. l, that the bounding edge 18 of the slot 13 is so shaped that when the eccentric has moved the cam into the proper position for tipping the buckets it is positively stopped by the portion 23 of the edge surrounding the opening 13. This stop serves as a means for in icating to the person who may be adjusting the tipping device when the parts have come to the proper working position. Likewise the portion 24 of the cam may serve as a stop to limit the movement of the eccentric in the other direction and stop it when the parts have been lowered or thrown out of working position.

It will thus be seen that I have invented and herein illustrated a practical device combining, broadly, the following elements` namely, a tilting device for the elevatorbuckets, a positively operated means for moving the tilting device into and out of operative position, and a stop for arresting these parts when they come into working position. ment of these elements-the form which I prefer to use-it is evident that the construction and arrangement of these' mechanical elements may be varied from what is described, and shown in the drawings, without, however, departing from the spirit and principle of the invention. By constructing the dumpingcam or tilting device for the buckets with a relatively abrupt and quick-acting' face on its forward side and a more gradual slowlyacting face upon its rear side I insure that the buckets shall be quickly brought to the position to completely discharge their contents very soon after they pass the near edge of the hopper, chute, or other receptacle into which they discharge, while allowing them to come back to their normal swinging position so gradually as to prevent them from oscillating to an undesirable extent after discharge.

What I claim, and desire to secure by Letters Patent, is-

1. The combination with an elevator having swinging buckets, of a tilting device for the buckets, provided with an aperture, and means for positively moving the tilting device into and out of operative position arranged to enter said aperture in the tilting device, substantially as set forth.

2. The combination with an elevator having swinging buckets, of a tilting device for the buckets in which is formed an open slot, an eccentric mounted in the said slot and arranged to positively move the tilting device both into and out of operative position, and means for operating the eccentric, substantially as set forth.

3. The combination with ing swinging buckets, of a an elevator havtilting device for buckets to oscillate after the buckets and an While I have shown but one embodil eccentric for moving the tilting device into operative position, the tilting device being arranged to positively arrest the movement of the eccentric when it has reached the proper working position, substantially as set forth.

4. The combination with an elevator having swinging buckets, of a tilting device and an eccentric for movi g the tilting device to operative position, the eccentric having lateral engagement with the tilting device whereby the latter is held in proper alinement by thev eccentric, substantially as set forth.

5. The combination with an elevator having swinging buckets, of a tilting device for the buckets provided with an aperture, and an eccentric mounted in the said aperture, and provided with eripheral anges arranged to engage witli) the opposite sides of the lifting device, substantially as set forth.

6. The combination with a conveyer having swinging buckets, of a tilting device therefor having an aperture and an eccentric for moving the tilting device into operative position provided with peripheral flanges adapted to engage with the opposite faces of the lifting device, the eccentric being formed of two parts each of which carries one of the flanges, substantially as set forth. c

7. The combination with a conveyer, having swinging buckets, of a tilting device for the buckets, and means for moving the tilting device into and out of operative position, said means being adapted to limit the upward movement of said tilting device as it comes into working position, substantially as set forth.

8. The combination with an elevator having swinging buckets, of a tilting device for the buckets, means for vertically moving the tilting device into and out of working position, and stops for positively limiting the movement of these parts when the tilting de vice arrives at working position and also when it is moved out of working position, substantially as set forth.

9. The combination with a conveyer having swinging buckets, of a tilting device for the buckets, and means for moving said device into and out of operation, said means adapted to arrest the movement of said tilting device relative to it in either direction when the said tilting device is in working position.

10. The combination with a conveyer having swinging buckets, of a tilting device for the buckets mounted on a horizontal aXis and means for moving said device into and out of operation about the aXis, said means being adapted to arrest the movement of said device relative to it in either direction about the axis when the device is in working position.

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11. The combination With a conveyer hav- In testimony whereof I affix my signature ing swinging buckets, of a tilting device Jfor in presence of tWo Witnesses. the buckets having front and rear cam-surfaces, andmeans arranged between the said FREEMAN R WILLSON JR' 5 cam-surfaces for moving the said tilting de- Witnesses:

vice into and out of operative position7 sub- JoE WEBSTER,

stantially as set forth. JOHN L. V. BONNEY. 

